Northumberland Formation

Add links
Source: Wikipedia, the free encyclopedia.
Northumberland Formation
Stratigraphic range: Late Cretaceous,
?Campanian–Maastrichtian
TypeGeological formation
Unit ofNanaimo Group
UnderliesSpray Formation
Location
Country Canada

The Northumberland Formation is a

formation in Canada. It belongs to the larger Nanaimo Group. Indeterminate bird and pterosaur fossils have been recovered from the formation,[1] as well as a potential gladius of Eromangateuthis.[2] An extensive diversity of shark teeth is known from the formation; many appear to be closely allied with modern deep-water shark taxa, suggesting a deep-water environment for the formation.[3] The most well-known exposures of the formation are on Hornby Island
.

Vertebrate paleofauna

Cartilaginous fish[4]

Hybodontiformes

Genus Species Location Abundance Notes Images
Meristodonoides M. sp. A
hybodontid shark
.

Hexanchiformes

Genus Species Location Abundance Notes Images
Chlamydoselachus C. balli A chlamydoselachid shark, related to the modern frilled shark.
Rolfodon R. ludvigseni A chlamydoselachid shark.
R. cf. thompsoni
Dykeius D. garethi A very large chlamydoselachid shark.
Hexanchus H. microdon A cow shark related to the modern bluntnose sixgill shark.
Notidanodon N. pectinatus A cow shark.
Xampylodon X. dentatus A large cow shark.
Protoheptranchias P. lowei A cow shark similar to the modern sharpnose sevengill shark.
Paraorthacodus P. rossi A paraorthacodontid shark.
Komoksodon K. kwutchakuth A
komoksodontid
shark.

Echinorhiniformes

Genus Species Location Abundance Notes Images
Echinorhinus E. lapaoi A echinorhinid shark, related to the modern bramble shark.

Squaliformes

Genus Species Location Abundance Notes Images
Eoetmopterus E. supercretaceus An etmopterid shark similar to modern lantern sharks.
Squalus S. vondermarcki A dogfish shark, related to modern spurdogs.
S. nicholsae
S. sp.
Centrosqualus C. mustardi A dogfish shark.
Protocentrophorus P. steviae A dogfish shark.
Rhinoscymnus R. clarki A sleeper shark, possibly included within Somniosus.
Centroscymnus C. sp. A sleeper shark related to the modern Portuguese dogfish.
Squaliodalatias S. savoiei A dalatiid shark.
Hessinodon H. wardi A possibly dalatiid shark.

Pristiophoriformes

Genus Species Location Abundance Notes Images
Pristiophorus P. smithi A sawshark.
P. pricei

Orectolobiformes

Genus Species Location Abundance Notes Images
Plicatoscyllium P. cf. globidens A ginglymostomatid shark.
Hemiscyllium H. hermani A bamboo shark.

Lamniformes

Genus Species Location Abundance Notes Images
Carcharias C. dominguei A sand shark, related to the modern sand tiger shark.

Synechodontiformes

Genus Species Location Abundance Notes Images
Synechodus S. dereki A
palaeospinacid
shark.

Carcharhiniformes

Genus Species Location Abundance Notes Images
Scyliorhinidae indent. A catshark of uncertain affinities.
Florenceodon F. johnyi A florenceodontid shark.

Bony fish

Genus Species Location Abundance Notes Images
Gwawinapterus G. beardi Jaw. A saurodontid ichthyodectiform, initially identified as an istiodactylid pterosaur.[5]

Birds

Genus Species Location Abundance Notes Images
Maaqwi[6] M. cascadensis Coracoid and wing bones. A large vegaviid ornithuran.
Enantiornithes indet.[7] An enanthiornithine avialan.

Pterosaurs

Genus Species Location Abundance Notes Images
Azhdarchoidea indet.[1] A possibly azhdarchid pterosaur.

Squamates

Genus Species Location Abundance Notes Images
Mosasauridae indet.[8] A mosasaur.

Invertebrate paleofauna

Molluscs

Cephalopods[9]

Genus Species Location Abundance Notes Images
Baculites B. occidentalis A baculitid ammonite.
Fresvillia F. constricta A baculitid ammonite.
Diplomoceras D. cylindraceum A diplomoceratid ammonite.
D. cf. cylindraceum
Exiteloceras E. densicostatum A diplomoceratid ammonite.
E. bipunctatum
Phylloptychoceras P. horitai A diplomoceratid ammonite.
Solenoceras S. exornatus A diplomoceratid ammonite.
S. cf. reesidei
Nostoceras N. adrotans A nostoceratid ammonite.
N. hornbyensis
N. aff. pauper
Enchoteuthis[2] E. sp. A muensterellid octopodiform.
Eromangateuthis[2] E. soniae? A plesioteuthid octopodiform.
Cyrtobelus[10]
 C. hornbyense A groenlandibelid spirulid.[2]
Actinosepia[2] A. canadensis An actinosepiid vampyromorphid.[11]
Cirroteuthidae indet.[2] Gladius. A cirroteuthid octopus.

Gastropods

Genus Species Location Abundance Notes Images
Tessarolax[8] T. louellae An aporrhaid gastropod.

Crustaceans

Genus Species Location Abundance Notes Images
Neocallichirus N. manningi A callianassid decapod.
Longusorbis L. cuniculosus A longusorbiid decapod.
Unnamed raninoid[12] Unnamed A raninoid decapod.

Paleoflora

Gymnosperms

Genus Species Location Abundance Notes Images
Cunninghamia C. hornbyensis Permineralized wigs and leaves. A member of the extant Cupressaceae genus Cunninghamia. Closely resembles extant species.[13]
Cycadeoidea[14] C. maccafferyii A bennettitalean.

Angiosperms

Genus Species Location Abundance Notes Images
Atli[15] A. morinii Stem A member of the Ranunculales with a liana-like growth habit.

See also

Footnotes

  1. ^
    PMID 27853614
    .
  2. ^ a b c d e f Fuchs; Beard; Tanabe; Ross, Dirk; G.; K.; R. (2007-08-17). "Coleoid cephalopods from the Late Cretaceous north eastern Pacific" (PDF). Seventh International Symposium 'Cephalopods - Present & Past'.: 131.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. S2CID 212878837
    .
  4. S2CID 212878837
    .
  5. S2CID 129180570
    .
  6. PMID 29220405
    .
  7. ISSN 0008-4077
    .
  8. ^ a b "PBDB". paleobiodb.org. Retrieved 2024-01-23.
  9. S2CID 134663270
    .
  10. ^ "PBDB". paleobiodb.org. Retrieved 2024-01-23.
  11. ^ "PBDB". paleobiodb.org. Retrieved 2024-01-23.
  12. doi:10.1127/njgpa/2023/1177
    .
  13. ISSN 0034-6667
    .
  14. PMID 21665746
    .
  15. S2CID 84787422
    .

References


formation in Canada is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Northumberland_Formation&oldid=1214607281"